API 5CT Seamless steel casing and tubing

API 5CT Seamless steel casing and tubing
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API 5CT seamless oil casing pipe for drilling pipeline is a large diameter pipe that serves as the tructural retainer,it can protect both subsurface and well bore from collapsing and to allow drilling fluid to circulate and extraction.
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Product Parameters

Casing Pipe is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.


API 5CT standard oil casing plays an important role in preventing oil well from being damaged by shallow oil layer and supporting the transportation of oil and gas. What’s more, casing pipe can support the weight of the wellhead layer to prevent collapse. API 5CT casing pipe ensure the smooth progress of the whole drilling process, after that, transport oil and gas from drilling to ground.

Material:J55,K55,L80,N80,P110

Size: 2-1/2″ ,4 1/2″,5 1/2″,6 5/8″,7″ ,9 5/8″ to 20″  / OD 60mm to 508 mm

Wall thickness: 4-16mm

Length: R1(4.88m-7.62m)/R2(7.62m-10.36m)/R3(10.36m-14.63)

coupling:   BTC (Buttress Thread Coupling)
STC (Stub(Short) Thread Connector),
LTC (Long Thread Connector)

NUE/EUE/VAM or no thread

Standard: API spec 5CT/ ISO11960

Certificates:API5L, ISO 9001:2008,SGS, BV,CCIC

Surface Treatment:External surface coating (black painted), mark as api 5ct stanard,varnish, oil

Dimension Tolerance:

Types of steel tubesOuter DiameterWall Thickness
Cold-rolled tubesTube sizes(mm)Tolerances(mm)Tolerances(mm)
<114.3±0.79-12.5%
≥114.3-0.5%,+1%

Technical data

Chemical composition (Max%)

GradeMfg.ProcessTechniqueCSiMnPSNiCrMoOthers
J55SMLSHot rolled/Cold drawn---0.0300.030----
N80---0.0300.030----
K55---0.0300.030----
L800.430.451.900.0300.0300.25--Cu 0.25
P-110---0.0300.030----
C900.35-1.000.200.0100.991.200.75-
C950.450.451.900.0300.030----
T950.35-1.200.200.0100.990.40~1.500.25~0.85-


Mechanical Properties:

Standard codesModels of steel tubesTensite strength(MPa)Yield strength(MPa)Elongation(%)Hardness
API SPEC 5CTJ55≥517379~552check the table
K55≥517≥655
N80≥689552~758
L80(13Cr)≥655552~655≤241HB




Product Display

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Product Application

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Product Packaging

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Factory Display

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FAQ

Q: Are You Manufacture or Trade Company?
A: We are the professional manufacturer of steel products located in China. Welcome to contact us and visit our factory before you place orders.

Q: How do you guarantee the quality?
A: We can send free samples to you, we can accept third-party testing.
We also have test certificate, every batch goods will be testing before shipment, and the testing report will delivery to you with your goods.

Q: Can I get free samples?
A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.

Q: What is the MOQ?
A: If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.

Q: Can you OEM or ODM?
A: Yes, we have a strong developing team. The products can be made according to your request

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